Texture Development and Anisotropic Photoelastic Properties in Rolled Silver Chloride

Experimental and theoretical studies have been carried out in order to relate elastic anisotropy to optical anisotropy by means of photoelasticity. The fundamentals of anisotropic photoelasticity have been described. Specimens of monocrystalline and polycrystalline silver chloride have been submitted to tensile stress and relative retardation and extinction angles observed in polarized monochromatic light to show conformity to the theories which quantitatively relate the state of stress and optical phenomena. Textures of cold-rolled as well as of recrystallized silver chloride specimens were determined with an X-ray goniometer. Texture determining parameters such as degree of rolling and recrystallisation time and temperature have been varied. Textures found in silver chloride after various processing have been characterized.

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Combined experimental and theoretical studies on the X-ray crystal structure, FT-IR, 1H NMR, 13C NMR, UV–Vis spectra, NLO behavior and antimicrobial activity of 2-hydroxyacetophenone benzoylhydrazone

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy ◽

10.1016/j.saa.2014.01.043 ◽

2014 ◽

Vol 124 ◽

pp. 548-555 ◽

Cited By ~ 26

Author(s):

Iran Sheikhshoaie ◽

S. Yousef Ebrahimipour ◽

Mahdeyeh Sheikhshoaie ◽

Hadi Amiri Rudbari ◽

Moj Khaleghi ◽

...

Keyword(s):

Crystal Structure ◽

Antimicrobial Activity ◽

1H Nmr ◽

13C Nmr ◽

Theoretical Studies ◽

X Ray ◽

Ft Ir ◽

Experimental And Theoretical Studies

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Experimental and Theoretical Studies in X-Ray Intensity Measurement

British Journal of Radiology ◽

10.1259/0007-1285-2-18-267 ◽

1929 ◽

Vol 2 (18) ◽

pp. 267-296 ◽

Cited By ~ 5

Author(s):

W. V. Mayneord

Keyword(s):

Intensity Measurement ◽

Theoretical Studies ◽

X Ray ◽

Experimental And Theoretical Studies

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Experimental and theoretical studies of the mica polymorphs

Mineralogical Magazine and Journal of the Mineralogical Society ◽

10.1180/minmag.1956.031.234.03 ◽

1956 ◽

Vol 31 (234) ◽

pp. 209-235 ◽

Cited By ~ 94

Author(s):

J. V. Smith ◽

H. S. Yoder

Keyword(s):

Growth Mechanism ◽

Theoretical Study ◽

Dominant Role ◽

Spiral Growth ◽

Theoretical Studies ◽

X Ray ◽

Layer Cell ◽

Triclinic Structure ◽

Experimental And Theoretical Studies ◽

Made In

SummaryAn experimental and theoretical study has been made in order to determine the number and the structure of the possible polymorphs and to determine the structural relations between them. The simplest structures are 1M, 2M1, 2M2, 3T, 20, and 6H polymorphs, and more complicated types can be developed. Some of the previously described polymorphs were not contained in the theoretical list and were re-examined. The 6M structure was found to be a 2M2 polymorph, the 6-layer triclinic type was found to be a 2M1 polymorph, and the 3M structure was shown to be a 3T type. The 24-layer triclinic structure could be described on a simpler 8-layer cell. This type together with a new 12-layer monoclinic structure, as well as other structures of higher periodicity, presumably consists of complex stacking and results from spiral-growth mechanism. Two extreme types of layer-disordered crystals may be built and a disorder of individual ions may also occur. Single stacking faults result in twinned crystals. A new twin relation (180° rotation about the [100] axis) has been recognized. Twenty specimens from extreme geological environments have been examined in order to evaluate the control of environment on the stacking. The type of stacking could not be attributed solely to the influence of pressure and temperature. Composition appears to play a dominant role in the type of stacking, and semi-quantitative structural arguments appear to support this contention. The influence of growth mechanism is discussed. A scheme for the identification of the mica polymorphs by X-ray powder and single-crystal methods is given.

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